/*
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.ice4apps.talk.session.util;

import javax.servlet.sip.SipURI;
import javax.servlet.sip.TelURL;
import javax.servlet.sip.URI;

/**
 * @author Biju
 */
public class URIUtil {

	static private URIUtil _instance = null;

    static public URIUtil instance() {
	      if(null == _instance) {
	         _instance = new URIUtil();
	      }
	      return _instance;
	   }

	// Extract username from URI
	public synchronized  String getUser(URI uri) {
		String user = null;
		if(uri.isSipURI()) {
			SipURI suri = (SipURI) uri;
			user = suri.getUser();
		} else {
			TelURL turi = (TelURL) uri;
			user = turi.getPhoneNumber();
		}
		return user;
	}

	public static String toCanonical(URI uri){
		SipURI sipUri = (SipURI) uri;
		return ("sip:" + sipUri.getUser() + "@" + sipUri.getHost()).toLowerCase();
	}
}
